Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

HAM RADIO VANITY: QRP Go-Box recommendations
10-13-17

Posted on 10/13/2017 2:52:33 AM PDT by markomalley

I'm looking to building a go-box for QRP HF use. The CONOPS for this box would be for weekend use on drives -- to prevent me from going completely crazy while the XYL does some antiquing, shopping for fleas, or painting/sketching some landscapes on weekend getaway trips.

Whatever I do needs to have quite a bit of capability while being compact and quick to set up and tear down. To that end, I'll probably want to mount or store any equipment in a small Pelican case. Looking at some portable solar panels for power (though I'd want the ability to use a small inverter generator or the car battery as well).

I'm open to suggestions on a radio, though I'm really lusting after the Elecraft KX2 or KX3. Anybody have any experience with either of these rigs?

The big question I have is on antenna choice: Buddipole versus remotely-tuned Magnetic Loop. I understand the Magnetic Loop has truly superior performance, but I would be concerned that the ultra-high Q of the antenna would mean that I would need to constantly retune the fool thing even for a couple of kHz shift in frequency. Again, does anybody have experience with either of these antennas?

(I'd typically say use a random wire / counterpoise and a auto-tuner, but I want to be able to VERY quickly set up and tear down in multiple environments, including parking lots, rest areas, and so on)

Any input is appreciated.

73,


TOPICS: Chit/Chat
KEYWORDS:
Navigation: use the links below to view more comments.
first 1-2021-30 next last

1 posted on 10/13/2017 2:52:33 AM PDT by markomalley
[ Post Reply | Private Reply | View Replies]

To: markomalley

Your post reads like Swahili to me, but since I’ve just started working on the Technician level test recently, I find it interesting anyway. Hope you find something that works.


2 posted on 10/13/2017 3:39:17 AM PDT by tbpiper
[ Post Reply | Private Reply | To 1 | View Replies]

To: markomalley

I solved All those problems of a
Go-Box with a Jeep TJ.
As for Shopping for Fleas?
I go Solo.


3 posted on 10/13/2017 3:45:56 AM PDT by Big Red Badger (UNSCANABLE in an IDIOCRACY!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: tbpiper

Perfect ditto.
Ham has been on my NYE resolutions list for a while now.


4 posted on 10/13/2017 3:55:18 AM PDT by Buttons12
[ Post Reply | Private Reply | To 2 | View Replies]

To: Big Red Badger; MarchonDC09122009; Pollard; DocRock; mad_as_he$$; Leo Carpathian; chajin; Mears; ...

Ping


5 posted on 10/13/2017 3:56:20 AM PDT by Tilted Irish Kilt
[ Post Reply | Private Reply | To 3 | View Replies]

To: markomalley

I have a bit of experience with mag loops. See my QRZ page. Good performance without needing height. A band scope is really useful for this type of antenna though. Mine fits in the back seat of my car so it would meet your needs. KD2CFG


6 posted on 10/13/2017 3:57:02 AM PDT by jack308
[ Post Reply | Private Reply | To 1 | View Replies]

To: Big Red Badger; MarchonDC09122009; Pollard; DocRock; mad_as_he$$; Leo Carpathian; chajin; Mears; ...
Ping
Is there a 'HAM ping list' ?
.. or is there sufficient interest in creating one, here ?
7 posted on 10/13/2017 3:59:05 AM PDT by Tilted Irish Kilt
[ Post Reply | Private Reply | To 3 | View Replies]

To: markomalley

Ping


8 posted on 10/13/2017 3:59:18 AM PDT by logi_cal869 (-cynicus-)
[ Post Reply | Private Reply | To 1 | View Replies]

To: tbpiper
Your post reads like Swahili to me, but since I’ve just started working on the Technician level test recently, I find it interesting anyway.

LOL (= Laugh Out Loud). I understand that Ham Radio jargon can sound like a completely different language. Here's a quick glossary:

QRP = low power

CONOPS = concept of operations

XYL = wife (YL is shorthand for "young lady" -- unmarried single woman)

High-Q = very tight resonant bandwidth (the "Q" factor is, for discussion purposes, the ratio between the center frequency of a circuit and frequency that is attenuated 3 decibels). A high-Q circuit or antenna is very effective at the resonant frequency but has lower bandwidth; a low-q circuit has a lot of loss at the resonant frequency but has a high bandwidth.

A Random-wire antenna is a length of wire that is intentionally not at resonance at the frequencies you intend to use (I know, it sounds counter-intuitive). With a random wire, you depend upon either your radio equipment or an external tuner to force it to resonance at the desired frequency. The disadvantages are that the antenna has really weird radiation patterns and is obviously inefficient. The advantage is that you can use one antenna to transmit over multiple frequency bands.

A counterpoise is a length of wire that is run either on the ground or close to the ground...they are used with unbalanced antennas to "complete the circuit" and allow transmission.


I've been licensed since 1974. It's a great hobby. Good luck with the technican test. Get your General as soon as you can manage it -- the HF bands you can access with the General and Extra licenses are the real heart of the hobby in my opinion.

9 posted on 10/13/2017 4:06:09 AM PDT by markomalley (Nothing emboldens the wicked so greatly as the lack of courage on the part of the good -- Leo XIII)
[ Post Reply | Private Reply | To 2 | View Replies]

To: Tilted Irish Kilt

If someone starts a ping list count me in.


10 posted on 10/13/2017 4:15:11 AM PDT by mad_as_he$$ (Not my circus. Not my monkeys.)
[ Post Reply | Private Reply | To 7 | View Replies]

To: Tilted Irish Kilt

add me to the Ham radio ping list please.


11 posted on 10/13/2017 4:25:55 AM PDT by fulltlt
[ Post Reply | Private Reply | To 7 | View Replies]

To: Tilted Irish Kilt

Add me to the HAM ping list if there is one


12 posted on 10/13/2017 4:31:30 AM PDT by stickandrudder (Another Bitter-Clinger! God-Family-Tribe)
[ Post Reply | Private Reply | To 7 | View Replies]

To: mad_as_he$$; fulltlt
mad_as_he$$ :" If someone starts a ping list count me in."

I don't know if there is a "Ham" ping list
However, having been through two hurricanes, I know that there is a need for one here, for communications sake.
If there is already a ping list, I would like to know, and who is maintaining the list
Please advise !

13 posted on 10/13/2017 4:32:23 AM PDT by Tilted Irish Kilt
[ Post Reply | Private Reply | To 10 | View Replies]

To: markomalley

The BITX40
A 59 dollar 40 meter SSB rig.
NOT a kit...it’s a mostly SM board that is fully built.
You just attach speaker, volume control...etc
You can find the case kit for 20.00 that includes all the finishing touches like spkr, knobs...etc

http://www.hfsigs.com/

The 59$ includes shipping.

The case
https://amateurradiokits.in/product/874/


14 posted on 10/13/2017 4:37:35 AM PDT by Bobalu (The NFL, Watching their demise is more fun than watching their games.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Tilted Irish Kilt

Bookmark


15 posted on 10/13/2017 5:32:49 AM PDT by Techster
[ Post Reply | Private Reply | To 7 | View Replies]

To: Tilted Irish Kilt

There is a ham radio ping list, but I can’t recall who has it.


16 posted on 10/13/2017 5:38:04 AM PDT by Jamestown1630 ("A Republic, if you can keep it.")
[ Post Reply | Private Reply | To 7 | View Replies]

To: Tilted Irish Kilt; mylife

I remember now - Mylife had one.


17 posted on 10/13/2017 5:40:38 AM PDT by Jamestown1630 ("A Republic, if you can keep it.")
[ Post Reply | Private Reply | To 7 | View Replies]

To: markomalley

Thanks! Looking forward to it.


18 posted on 10/13/2017 5:41:53 AM PDT by tbpiper
[ Post Reply | Private Reply | To 9 | View Replies]

To: markomalley

Thanks! Looking forward to it.


19 posted on 10/13/2017 5:41:54 AM PDT by tbpiper
[ Post Reply | Private Reply | To 9 | View Replies]

To: Buttons12

When the last hurricane squirted through here I thought it was about time to do something that might be useful.


20 posted on 10/13/2017 5:44:16 AM PDT by tbpiper
[ Post Reply | Private Reply | To 4 | View Replies]


Navigation: use the links below to view more comments.
first 1-2021-30 next last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson